Loose or bound leaf cover or support



June 13, 1933. F EY 1,913,634

LOOSE OR BOUND LEAF COVER OR SUPPORT Filed Nov. 14, 1932 2 Shqets-Sheet 1 K g" ""13 '"Zj O 0' o E O 0/6 O o 3) o 0 o o i 0 o o O O O O h K O 0 R i 0 T Fig.6 f

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June 13, 1933. |MPEY 1,913,634

LOOSE OR BOUND LEAF COVER OR SUPPORT Filed Nov. 14, 1932 2 Sheets-Sheet 2 Aka i the otherupiece.

, EBB

form of book cover constructed in accordance with this invention, and F gures 4 and ,5 are Patented June 13, 1933 MQBLAND 81: IMPEY nrmrrnnor noarnsrmn, BIR IN AM, ENGLAND Loosn on. :Boiinn LEAF cover; on surroar This invention relates particularly to the covers of [loose leaf binders, but is applicable to other sheet holders, or supports,and also to ordinary book covers.

The objectfiofthe invention is to enable alight and durable cover" or .ljeaf A support or holder ,to be constructed in a simple and economical manner.

The invention comprisesthe construction of the cover or leaf support or the like whol- 1y or in part from a pair or pairs of metal pieces which are suitably spaced apart and are united by the welding orriveting of depressed portions in one or each piece to corresponding portions or to plain portions on In a modification the invention comprises the combination of a cardboardor otherstifit' and non-metallic sheet, and corners oredges or both constructed] from metal parts as above described, the'depressions in this construction being engaged with holes in the cardboard or like part; a

In the two accompanying sheets of explanatory drawings r 3g 14 i Figure 1 is a frontelevation of a book cover constructed in accordance with this invention, and Figure 2 is a crosssecti'on of the same. 1 y r i 1 1 Figure 3 is a front elevation of a. modified a respectively sectional end elevation and sectional plan ofthe same. p r a t Figure 6 is an elevation of one corner of a cardboard or like cover prior to the application to itof a metal corner piece in accord ance with this invention.

Figures 9 andlO show a modified method of attaching the corner piece.

Figures'8 and 10 also serve as crosssections illustrating the mode of attaching an edge pieceto one or more of the edges of the cover. l

In carrying the invention into effect in the manner illustrated in Figures and 2, each Application medmvemberia 1932, Serial No. 642,631, and in Great Britain December 31,1931;

cover of a loose leaf binder,for of an ordinary book, or a back support for a number of loose sheets, isconstructed from two thin sheets of metal a and 6. .These may be formed byvfolding a single sheet. Each sheet is formed at suitable positions onits surface withga number of small, circular or other depressed portionsc. These portions on the two sheets may be arranged opposite each other, or otherwise. Their purpose is to strips it made fromqcompressed fibre, vulcanite or other hard non-metallic material. The part iinFigures 1 and 2 indicates a member which is hingedly attachedto the rear edge'ofthe cover. r

i It will be seen in the cross section in Figure 2, that only the opposite depressed portions marked stare in contact with each other. This arises out of the fact thatthe cover i]: lu'strated is required to contain part of the binding mechanism of a loose leaf book, which mechanism consists in part of a pair of flexible thongs t. a The ends of the thongs which liewithin the interior of thiscover are connected by a cross bar,and the latter is engaged bya screw,whereby the bar and thongs can be moved relatively tothe cover for releasing or securing the leavesheld between the covers. The cross bar and screw are well known and form no part of the "present invention. .To accommodate the thongs, cross bar and screw, thedepressions c which would otherwise interfere with those parts are made of varying depths so as to leave-spaces between their adjacent faces 'as will be seen in Figure 2, to accommodate and permit the necessary movements of the said parts within the cover. But all the other depressions as c are brought into contact with UNITEDSTATESTPATENT. OFFICE 4 t'nA nc Is 1mm intent, "on NoRrHFiELD, BIRMINGH M, ENGLAND, Assrorioe "ro space the two sheets at a suitable distance In the alternative construction shown in Figures 3 to 5, the cover comprises a pair of parts a, b. which. may. be formed from two sheets or by folding a single sheet. Each part a, b has formed on its depressed portions in the form of transverse channels 0 and the parts are secured together by weld ing or riveting at such positions as those marked 0 In the example illustrated the bottoms of opposite channels do not touch each other, a small space being left between them, except where the welding occurs, but if desired the bottoms of opposite channels may be brought into contact with each other along their entire length. Also the edges are welded or riveted together at the positions marked d. When it is necessary to arrange part of the binding mechanism within the cover, then the channels are suitably modified either in shape, disposition or depth in a manner similar to that described in connection with Figures 1 and 2.

-A cover or leaf support as above described is light and rigid and is capable ofbeing readily produced at small cost,

'When it is preferred to make the article mainly of cardboard, wood or the like, the

metal parts maybe limited to the corners or edges of the article as shown in Figures 6 to 10. corners of each or either cover of a loose leaf binder or the like in the manner illustrated in Figures 3 to 7, each of the corners to be reinforced is fitted with a sheet steel piece 6 of channel section consisting of a pair of sides which can he slipped over the inner and outer'surfaces of the cover '7 whose rounded corner (Figure 6) is preferably reduced as shown to the extent of the thickness of the metal sheet. The sides of the piece 0 are united along two of their adjacent edges and the corner contained between the said edges may be rounded, as will be clear'from Figure 7, so as to fit the corner of the cover f. In each side a portion of the metal is depressed to form an inward projection g, the two proj ections being opposite each other, (Figure 8).

A suitably placed hole j is formed in the cover, and the corner piece may be secured to the cover by engaging the inward projections with the hole, but preferably the corner piece 0 after having been placed in position is permanently secured by electric Welding as shown in Figure 8. Alternatively a similar corner piece 0 may be secured by a rivet or eyelet k (Figures 9 and 10) the ends of which are sunk below the outer surfaces of the corner piece.

In applying 'my invention to the and 10 serves to illustrate this modification.

Eachside is formedwith one or more depressions g for engaging holes 7' in the cover, and the depressed portions are united by welding or riveting as shown. Whilst .it is immaterial to the invention whether the depressions are formed before or after placing the metal corner or edge pieces in position on the cover, it may sometimes be convenient and preferable to form them after the pieces have been placed in position. Also it is convenient to provide depressions on each side opposite each other so that the adj aeent ends come together and can be welded or otherwise united. It may, however, be desirable for some purposes to provide a depression on one side only which extends into or nearly into eontactwith the opposite side, or to provide non-coincident depressions in each side of the reinforcing pieces.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 2- 1. A cover for a loose leaf binder or other book, or a leaf support, comprising at least one pair of metal pieces which are suitably spaced apart and at least one of which has depressed portions, and which are united by securing some depressed portions in one piece to portions on the other piece.

2. A- loose leaf or other book cover, or a sheet support, constructed from a pair of spaced metal sheets at least one of which is formed with small depressed portions, the sheets being united by securing some of the depressed portions on one sheet to portions on the other sheet.

3. A loose leafor other book cover,'or a sheet support, constructed .from .a pair of spaced metal sheets at least one of which is formed with depressed transverse channels, the sheets being united by securing parts of the channels on'one sheet to parts of the other sheet.

4. A loose leaf or other book cover, or a sheet support, as claimed in claim 2, in which the two metal sheets are formed by folding a single metal sheet, the edges of the folded sheet being secured at intervals by welding. 5. A cover for a loose leaf binder or other book, or a leaf support, comprising a pair of metal pieces which are suitably spaced apart, at least one of the pieces having depressed portions, and which are united by welding some depressed portions in one piece to pertions on the other piece.

6. A cover for a loose leaf binder or other book, or a leaf support, comprising a pair of metal pieces which are suitably spaced apart, and whichhave depressed portions and which are unitedby the welding of depressed portions in one piece to corresponding portions on the other piece.

7. A cover for a loose leaf binder or other book, or a leaf support, comprising a pair of metal pieces which are suitably spaced apart, and which have depressed portions and which are united by the riveting of depressed portions in one piece to portions of the other piece. a 19 8. A loose leaf or other book cover, or a sheet support, constructed from stiff, nonmetallic material having holes, and having edges made from a pair of metal parts one of which is formed with a plurality of depressed portions engaging holes in the nonl metallic part, the metal parts being secured in position on the depressed portions.

9. A loose leaf or other bookcover, or a sheet support, constructed from stiff, non metallic material having holes, and having edges made from a pair of metal parts each of which is formed with a plurality of depressed portions engaging the holes in the non-metallic part, the metal parts being welded together at the depressed portions.

10. A cover for a loose leaf hinder or other book, or a leaf support, comprising at least one pairof metallic pieces suitably spaced apart and at least one of which has at least one depressed portion which is secured to a portion of the other piece.

11. A looseleaf or other book cover, or a sheet support, constructed from stiff, nonmetallic material, having holes at the corners thereofthe cover having corners each made from a pair of metal parts each of which is formed with a depressed portion engaging a, hole in the non-metallic part, the metal parts being welded at the depressed portions.

12. A loose leaf or other book cover, or a sheet support, constructed from stiff, nonmetallic material, having a hole at each corner, the cover having corners each made from. a pair of metal parts each of which is 4 formed with a depressed portion engaging a hole in the non-metallic part, the metal partsbeingriveted together at the depressed portions through the holes; i

In testimony whereof I have signed my name to this specification.

FRANCIS LEVITT IMPEY. 

